| 冠醚分离锂同位素工艺中锂的分光光度分析 |
| |
| 引用本文： | 张丽华,刘焕良,宋游.冠醚分离锂同位素工艺中锂的分光光度分析[J].原子能科学技术,2006,40(2):206-211. |
| |
| 作者姓名： | 张丽华 刘焕良 宋游 |
| |
| 作者单位： | 中国原子能科学研究院 ;放射化学研究所，北京 102413 |
| |
| 摘 要： | 本工作研究改进冠醚分离锂同位素工艺过程中水相和有机相中锂的分光光度分析法。以0.2%钍试剂为显色剂，用20%KOH溶液调节显色所需的强碱条件，试验获得了配合物在水 丙酮介质中的稳定显色。取样量为10μL时，锂含量在0.01~0.5g/L范围内符合比耳定律。水相样品锂测定值的相对标准偏差sr为2.0%，有机相样品锂测定值的sr为4.0%。
|
| 关 键 词： | 分光光度法 锂 钍试剂 |
| 文章编号： | 1000-6931（2006）02-0206-06 |
| 收稿时间： | 2004-06-04 |
| 修稿时间： | 2004-06-042004-10-20 |
Determination of Lithium in Crown-Ether Separation Process of Lithium Isotopes by Using Spectrophotometric Method |
| |
| ZHANG Li-hua,LIU Huan-liang,SONG You.Determination of Lithium in Crown-Ether Separation Process of Lithium Isotopes by Using Spectrophotometric Method[J].Atomic Energy Science and Technology,2006,40(2):206-211. |
| |
| Authors: | ZHANG Li-hua LIU Huan-liang SONG You |
| |
| Affiliation: | China Institute of Atomic Energy, P.O.Box 275-88, Beijing 102413, China |
| |
| Abstract: | A simple and exact method, spectrophotometric method, for determination of trace lithium was developed. Thoron was used as the developer, 20% potassium hydroxide was used to adjust alkalescence of the solution, and the lithium-thoron complex was developed in acetone water medium. In order to determine trace lithium in aqueous phase and organic phase, the operation procedure was established. Conformity to Beer’s law was obtained within the scope of 0.01~0.5 g/L of lithium at the sampling of 10 μL. The precision is better than 2.0% and 4.0%, respectively for the determination of lithium in aqueous and organic phases. |
| |
| Keywords: | spectrophotometric method lithium thoron |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《原子能科学技术》浏览原始摘要信息 |
|
点击此处可从《原子能科学技术》下载全文 |
